Map data distribution system and navigation apparatus

• US 20040117110A1
• Filed: 07/01/2003
• Published: 06/17/2004
• Est. Priority Date: 07/05/2002
• Status: Active Grant

• Current Assignee: Alpine Electronics Incorporated (Alps Alpine Co., Ltd.)
• Original Assignee: Alpine Electronics Incorporated (Alps Alpine Co., Ltd.)
• Inventors: Sasajima, Akihiko
• Granted Patent: US 6,915,206 B2
• Time in Patent Office: Days
• US Class Current: 701/208
• CPC Class Codes: G01C 21/3889 Transmission of selected map data, e.g. depending on route
• CPC Class Codes: G01C 21/3896 Transmission of map data from central databases
• CPC Class Codes: G08G 1/0969 having a display in the form of a map

Abstract

A map data distribution system includes a navigation apparatus and a map distribution server. The navigation apparatus is connected to the map distribution server through a predetermined network. The navigation apparatus transmits a distribution request to the map distribution server. The distribution request includes distribution conditions relating to the amount of map data to be distributed. The map distribution server transmits area information to the navigation apparatus. The area information shows a geographical area of the map data that is transmittable under the distribution conditions. The navigation apparatus displays, in accordance with the transmitted area information, a map area of the map data transmittable in a single distribution operation under the distribution conditions and superimposes it on the map. The navigation apparatus transmits a downloading instruction in which one or more map areas are specified by a user to the map distribution server. The navigation apparatus downloads predetermined map data.

Claims

1. A map data distribution system comprising:

a navigation apparatus comprising a distribution request transmitting section and a map data receiving section; and

a map distribution server comprising a map data transmitting section,

wherein the navigation apparatus is connected in communication with the map distribution server through a predetermined network;

the distribution request transmitting section transmits a distribution request to the map distribution server, the distribution request including distribution conditions relating to the amount of map data to be distributed;

the map data transmitting section transmits the map data satisfying the distribution conditions included in the distribution request; and

the map data receiving section receives map data that satisfies the distribution conditions and that is sent in accordance with the distribution request.

2. A map data distribution system according to claim 1, wherein the map distribution server further comprises an area information transmitting section,

wherein, before the map data transmitting section transmits the map data, the area information transmitting section transmits area information showing a geographical area of the map data that is transmittable under the distribution conditions;

the navigation apparatus further comprises an area information displaying section; and

the area information displaying section visually displays the geographical area of the map data that is receivable under the distribution conditions, in accordance with the area information transmitted from the map distribution server.

3. A map data distribution system according to claim 2, wherein the navigation apparatus further comprises a distribution instruction transmitting section,

wherein, when an instruction to distribute the map data is given by a user after the display processing is performed by the area information displaying section, the distribution instruction transmitting section transmits the distribution instruction to the map distribution server, and the map data transmitting section transmits the map data after receiving the distribution instruction.

4. A map data distribution system according to claim 2, wherein the area information displaying section displays map area information showing a geographical area corresponding to the map data that is transmittable in a single transmission operation under the distribution conditions, the map area information being superimposed on the map.

5. A map data distribution system according to claim 4, wherein the map data transmitted from the map distribution server to the navigation apparatus comprises an update to map data held in the navigation apparatus.

6. A map data distribution system according to claim 5, wherein the update is classified into different types depending on their uses, and the area information displaying section displays the map area information and the type of the update.

7. A map data distribution system according to claim 6, wherein the type of the update is displayed using characters.

8. A map data distribution system according to claim 6, wherein the area information displaying section displays each area corresponding to the map area information in a color in accordance with the type of the update.

9. A navigation apparatus comprising:

a distribution request transmitting section; and

a map data receiving section,

wherein the navigation apparatus is connected in communication with a map distribution server through a predetermined network and receives map data from the map distribution server;

wherein the distribution request transmitting section transmits a distribution request to the map distribution server, the distribution request including distribution conditions relating to the amount of the map data to be distributed; and

the map data receiving section receives the map data that satisfies the distribution conditions and that is sent in accordance with the distribution request.

10. A navigation apparatus according to claim 9, further comprising an area information displaying section,

wherein, when area information showing a geographical area of the map data that is transmittable under the distribution conditions is transmitted from the map distribution server prior to transmission of the map data, the area information displaying section visually displays the geographical area of the map data that is receivable under the distribution conditions, in accordance with the area information.

11. A navigation apparatus according to claim 10, further comprising a distribution instruction transmitting section,

wherein, when an instruction to distribute the map data is given by a user after the display processing is performed by the area information displaying section, the distribution instruction transmitting section transmits the distribution instruction to the map distribution server.

12. A navigation apparatus according to claim 10, wherein the area information displaying section displays map area information showing a geographical area corresponding to the map data that is transmittable in a single transmission operation under the distribution conditions, the map area information being superimposed on the map.

13. A map data updating method for downloading map data from a map distribution server through a predetermined network and updating map data in a navigation apparatus, comprising:

transmitting, by the navigation apparatus, a distribution request to the map distribution server, the distribution request including distribution conditions relating to the amount of map data to be distributed;

transmitting, by the map distribution server, map data satisfying the distribution conditions included in the distribution request to the navigation apparatus; and

receiving, by the navigation apparatus, the map data satisfying the distribution conditions transmitted from the map distribution server.

14. A map data updating method according to claim 13, wherein the map distribution server transmits area information to the navigation apparatus before transmitting the map data, the area information showing a geographical area of the map data that is transmittable under the distribution conditions, and

the navigation apparatus visually displays the geographical area of the map data that is receivable under the distribution conditions, in accordance with the area information transmitted from the map distribution server.

15. A map data updating method according to claim 14, wherein, when an instruction to distribute the map data is given by a user after the display processing is performed, the navigation apparatus transmits the distribution instruction to the map distribution server, and the map distribution server transmits the map data after receiving the distribution instruction.

16. A map data updating method according to claim 14, wherein the navigation apparatus displays map area information showing a geographical area corresponding to the map data that is transmittable in a single transmission operation under the distribution conditions, the map area information being superimposed on the map.

17. A map data updating method according to claim 16, wherein the map data transmitted from the map distribution server comprises an update to map data held in the navigation apparatus.

18. A map data updating method according to claim 17, wherein the navigation apparatus classifies the update into different types depending on their uses, and the navigation apparatus displays the map area information and the type of the update.

19. A map data updating method according to claim 18, wherein the navigation apparatus displays the type of the update using characters.

20. A map data updating method according to claim 18, wherein the navigation apparatus displays each area corresponding to the map area information in a color in accordance with the type of the update.